const path = require('path') 
const { config } = require('process')
function resolve(dir) {
    return path.join(__dirname, dir)
}
const port = process.env.port || process.env.npm_config_port || 8080
const name="柯一后台管理系统"
module.exports={
    publicPath:process.env.NODE_ENV === "production" ? "/":"/",
    outputDir:'dist',
    assetsDir:'static',
    lintOnSave:true,
    productionSourceMap:false,
    devServer:{
        host:'0.0.0.0',
        port:port,
        open:false,
        proxy:{
            [process.env.VUE_APP_BASE_API]:{
                target:`http://www.cqkyikmao.com`,
                changeOrigin:true,
                pathRewrite:{
                    ['^'+process.env.VUE_APP_BASE_API]:''
                }
            }
        },
        disableHostCheck:true
    },
    chainWebpack:config=>{
        config.resolve.symlinks(true);
        config.resolve.alias.set('@',resolve('src'))
        config.plugins.delete('preload')
        config.plugins.delete('prefetch')
        config.plugin('html').tap(options=>{
            options[0].title=name
            return options
        })
        config.when(process.env.NODE_ENV!='development',config=>{
           config.plugin('ScriptExtHtmlWebpackPlugin')
           .after('html')
           .use('script-ext-html-webpack-plugin',[{
               inline:/runtime\..*\.js$/
           }]).end()
           config.optimization.splitChunks({
             chunks:'all',
             cacheGroups:{
                libs: {
                    name: 'chunk-libs',
                    test: /[\\/]node_modules[\\/]/,
                    priority: 10,
                    chunks: 'initial' // only package third parties that are initially dependent
                  },
                  elementUI: {
                    name: 'chunk-elementUI', // split elementUI into a single package
                    priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                    test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                  },
                  commons: {
                    name: 'chunk-commons',
                    test: resolve('src/components'), // can customize your rules
                    minChunks: 3, //  minimum common number
                    priority: 5,
                    reuseExistingChunk: true
                  }
             }

           })
           config.optimization.runtimeChunk('single'),{
            from: path.resolve(__dirname, './public/robots.txt'),//防爬虫文件
            to:'./',//到根目录下   
           }

        })
    }   
}